Albrechtschraufite Mineral Data

Albrechtschraufite Mineral Data +

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General Albrechtschraufite Information

Chemical Formula:

Ca4Mg(UO2)2(CO3)6F2·17(H2O)

Composition:

Molecular Weight = 1,428.98 gm

Calcium 11.22 % Ca 15.70 % CaO

Magnesium 1.70 % Mg 2.82 % MgO

Uranium 33.31 % U 37.79 % UO₂

Hydrogen 2.40 % H 21.43 % H₂O

Carbon 5.04 % C 18.48 % CO₂

Oxygen 43.67 % O

Fluorine 2.66 % F 2.66 % F

- % F -1.12 % -O=F₂

______ ______

100.00 % 97.76 % = TOTAL OXIDE

Empirical Formula:

Ca₄Mg(UO₂)₂(CO₃)₆F₂·17(H₂O)

IMA Status:

Approved IMA 1984

Locality:

Czech Rep, Jachymov, Zapadocesky Link to MinDat.org Location Data.

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Albrechtschraufite Crystallography

Axial Ratios:

a:b:c =1.0116:1:0.8679

Cell Dimensions:

a = 13.562, b = 13.406, c = 11.636, Z = 2; alpha = 115.72°, beta = 107.66°, gamma = 92.86° V = 1,813.88 Den(Calc)= 2.62

Crystal System:

Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1

Physical Properties of Albrechtschraufite

Color:

Yellow green.

Density:

2.6

Hardness:

2-3 - Gypsum-Calcite

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Albrechtschraufite

Optical Data:

NCalc= 1.5 - from Gladstone-Dale relationship (KC = 0.1895) where Ncalc=Dcalc*KC+1
NCalc= 1.49 - from Gladstone-Dale relationship (KC = 0.1895) where Ncalc=Dmeas*KC+1

Calculated Properties of Albrechtschraufite

Electron Density:

r_electron=2.48 gm/cc
note: r_{Albrechtschraufite}=2.62 gm/cc.

Fermion Index

Fermion Index = 0.00501
Boson Index = 0.99499

Photoelectric:

PE_{Albrechtschraufite}= 800.51 barns/electron
U=PE_{Albrechtschraufite} x r_electron=1,984.35 barns/cc.

Radioactivity:

GRapi = 2,686,674.61 (Gamma Ray American Petroleum Institute Units)

Albrechtschraufite is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.

Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 10 cm box) 11.32 ± 2.83 grams of pure Albrechtschraufite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 1132.1 ±283.03 grams of pure Albrechtschraufite .

**Estimated Radioactivity from Albrechtschraufite** - very strong
Specimen Size Weight/Volume (Sphere) *	Calculated Activity Bequerols (Bq)	Calculated Activity Curies (Ci)	Estimated Activity GR(api)	Estimated Exposure (mRem**)/hr If Held in Hand For One Hour
1000 gm / 9.00 cm	59,632,812	1.61E-03	2,686,674.61	883.29
100 gm / 4.18 cm	5,963,281	1.61E-04	268,667.46	88.33
10 gm / 1.94 cm	596,328	1.61E-05	26,866.75	8.83
1 gm / 9.00 mm	59,633	1.61E-06	2,686.67	0.88
0.1 gm / 4.18 mm	5,963	1.61E-07	268.67	0.09
0.01 gm / 1.94 mm	596	1.61E-08	26.87	0.01
0.001 gm / 0.90 mm	60	1.61E-09	2.69	0.00

Weight of pure Albrechtschraufite in grams (gm) and Calculated Diameter of a Sphere with a Density of 2.62 gm/cc.*
Goverment Estimate of Average Annual Exposure ( 360 mRem) **
Note: 10 microsieverts/hr = 1 mRem/hr **
Max Permissable Adult Dose 50,000 mRem/yr (hands), 15,000 mRem/yr (eyes)
Lethal Dose LD(50) Exposure 400,000 to 500,000 mRem

Albrechtschraufite Classification

Dana Class:

16b.7.11.1 (16b)Carbonates - Hydroxyl or Halogen

(16b.7)Dana Type

(16b.7.11)Dana Group

16b.7.11.1 Albrechtschraufite Ca4Mg(UO2)2(CO3)6F2·17(H2O) P1 1

Strunz Class:

V/F.04-40 V - Nitrates, Carbonates and Borates

V/F - Uranylcarbonates ([UO2]4+ - [CO3]2-)

V/F.04 - Urancalcarite - Albrechtschraufite series

V/F.04-10 Urancalcarite Ca(UO2)3(CO3)(OH)6·3(H2O) Pbnm,Pbn21 Ortho

V/F.04-20 Sharpite Ca(UO2)6(CO3)5(OH)4·6(H2O) Unk Ortho

V/F.04-30 Rabbittite Ca3Mg3(UO2)2(CO3)6(OH)4·18(H2O) Unk Mono

V/F.04-40 Albrechtschraufite Ca4Mg(UO2)2(CO3)6F2·17(H2O) P1 1

Other Albrechtschraufite Information

References:

NAME( Dana8) PHYS. PROP.(Dana8)

See Also:

Links to other databases for Albrechtschraufite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 - Uranium Minerals 13 -École des Mines de Paris

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Albrechtschraufite

Ca4Mg(UO2)2(CO3)6F2·17(H2O)
Dana No: 16b.7.11.1 Strunz No: V/F.04-40
Locality:

Notes: